WO2019140076A1 - Procédé et appareil de commande de multiplexage de signal de référence sur un canal partagé de liaison montante - Google Patents

Procédé et appareil de commande de multiplexage de signal de référence sur un canal partagé de liaison montante Download PDF

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Publication number
WO2019140076A1
WO2019140076A1 PCT/US2019/013028 US2019013028W WO2019140076A1 WO 2019140076 A1 WO2019140076 A1 WO 2019140076A1 US 2019013028 W US2019013028 W US 2019013028W WO 2019140076 A1 WO2019140076 A1 WO 2019140076A1
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WIPO (PCT)
Prior art keywords
uplink
resource block
waveform
mapping
reference signal
Prior art date
Application number
PCT/US2019/013028
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English (en)
Inventor
Yi Huang
Wanshi Chen
Peter Gaal
Renqiu Wang
Wei Yang
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to CN201980007812.XA priority Critical patent/CN111566980B/zh
Priority to EP19703436.6A priority patent/EP3738259A1/fr
Publication of WO2019140076A1 publication Critical patent/WO2019140076A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H04L5/26—Arrangements affording multiple use of the transmission path using time-division multiplexing combined with the use of different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the following relates to wireless communication, and more specifically to controlling multiplexing of a reference signal on an uplink shared channel.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power).
  • Examples of such multiple- access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE).
  • UE user equipment
  • the described techniques relate to improved methods, systems, devices, or apparatuses that support options for controlling multiplexing of a reference signal on an uplink shared channel (UL-SCH).
  • the UE may time division multiplex (TDM) a demodulation reference signal (DMRS) with other signaling, such as uplink control information (UCI) or UL-SCH data, in different symbol periods.
  • TDM time division multiplex
  • DMRS demodulation reference signal
  • UCI uplink control information
  • UL-SCH data uplink control information
  • the UE may map the DMRS to resource elements of one or more symbol periods within one or more resource blocks allocated to the UE for an uplink transmission (e.g., as part of an uplink grant).
  • the UE may then map UCI to one or more symbol periods different than the symbol periods of the DMRS mapping.
  • the DMRS, UCI, or both may be frequency interleaved with UL-SCH data for the resource blocks.
  • a base station may generate a message indicating whether a UE is to frequency division multiplex (FDM) a DMRS within a symbol period of a resource block allocated to the UE for an uplink transmission.
  • the message may include a single bit or an index that jointly signals a set of parameters, and may be control information transmitted to the UE via a control channel (e.g., downlink control information (DCI) in a physical downlink control channel (PDCCH)) or via radio resource control (RRC) signaling.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • RRC radio resource control
  • the UE may determine the multiplexing operation based on a type of waveform to be used for the uplink transmission.
  • the type of waveform used for the uplink transmission may include a discrete Fourier transport spread orthogonal frequency division multiples (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP- OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiples
  • CP- OFDM cyclic prefix orthogonal frequency division multiplex
  • the UE may TDM or FDM DMRS with UCI and/or UL-SCH data within the resource block allocated for uplink transmission. The UE may therefore efficiently utilize PUSCH resources and transmit a waveform of the uplink transmission having desired properties.
  • a method of wireless communication may include receiving, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission, determining, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block, and transmitting an uplink waveform within the resource block based on the mapping.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission, determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block, and transmit an uplink waveform within the resource block based on the mapping.
  • the apparatus may include means for receiving, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission, determining, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block, and transmitting an uplink waveform within the resource block based on the mapping.
  • a non-transitory computer-readable medium storing code for wireless communication is described.
  • the code may include instructions executable by a processor to receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission, determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block, and transmit an uplink waveform within the resource block based on the mapping.
  • determining the mapping for the resource block may include operations, features, means, or instructions for determining the mapping for the resource block that maps the demodulation reference signal to resource elements of a first symbol period of the resource block and maps the uplink control information to resource elements of a second symbol period of the resource block, the second symbol period distinct from the first symbol period.
  • the resource elements of the first symbol period may be separated by one or more intervening resource elements.
  • the one or more intervening resource elements may be empty.
  • the one or more intervening resource elements include uplink data.
  • determining the mapping for the resource block may include operations, features, means, or instructions for determining the mapping for the resource block that frequency division multiplexes the demodulation reference signal and uplink data in at least one symbol period of the resource block.
  • determining the mapping for the resource block may include operations, features, means, or instructions for determining the mapping for the resource block that does not frequency division multiplex the demodulation reference signal and uplink data within any symbol period of the resource block.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may include operations, features, means, or instructions for generating the uplink waveform in accordance with a waveform indicator of the grant that indicates a type of the uplink waveform.
  • the type of the uplink waveform specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may include operations, features, means, or instructions for receiving, from the base station, radio resource control signaling including a waveform indicator that indicates a type of the uplink waveform.
  • the uplink control information includes a hybrid automatic repeat request acknowledgement indication.
  • the uplink control information includes control state information part 1 data that includes at least one of a rank indicator, a channel state information reference signal index, or a channel quality indicator.
  • the uplink control information includes control state information part 2 data that includes at least one of a precoding matrix indicator, or a channel quality indicator.
  • a method of wireless communication may include receiving, by a user equipment (UE), a message indicating whether the UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, generating, by the EE, an uplink waveform based on the message, and transmitting, by the EE, the uplink waveform within the resource block of the uplink shared channel.
  • UE user equipment
  • the apparatus may include means for receiving, by a user equipment (EE), a message indicating whether the EE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, means for generating, by the EE, an uplink waveform based on the message, and means for transmitting, by the EE, the uplink waveform within the resource block of the uplink shared channel.
  • EE user equipment
  • the apparatus may include a processor, memory in electronic communication with the processor, and
  • the instructions may be operable to cause the processor to receive, by a user equipment (EE), a message indicating whether the EE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, generate, by the EE, an uplink waveform based on the message, and transmit, by the EE, the uplink waveform within the resource block of the uplink shared channel.
  • EE user equipment
  • a non-transitory computer-readable medium for wireless communication may include instructions operable to cause a processor to receive, by a user equipment (EE), a message indicating whether the EE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, generate, by the EE, an uplink waveform based on the message, and transmit, by the UE, the uplink waveform within the resource block of the uplink shared channel.
  • EE user equipment
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for processing the message to determine that the demodulation reference signal may be to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for processing the message to determine that the demodulation reference signal may be not to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for processing the message to determine that the demodulation reference signal may be to be time division multiplexed with the uplink control information or the uplink data within the resource block.
  • receiving the message includes processing a control channel corresponding to the resource block to obtain downlink control information (DCI) that comprises the message.
  • DCI downlink control information
  • the message may be a single bit included in the DCI.
  • the message indicates an index to a table that indicates a set of parameters for the resource block.
  • the index jointly signals the set of parameters to the UE.
  • generating the waveform includes generating the uplink waveform in accordance with a waveform indicator that indicates a type of the uplink waveform.
  • the type specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • generating the uplink waveform includes generating uplink control information (UCI).
  • UCI uplink control information
  • generating the uplink waveform includes determining a mapping that maps the UCI to at least resource element of the resource block.
  • generating the uplink waveform includes generating the uplink waveform based on the UCI and the mapping.
  • the UCI comprises at least one of channel state information (CSI) data, or CSI part 1 data, or CSI part 2 data, or acknowledgement data.
  • CSI channel state information
  • generating the uplink waveform includes generating uplink data. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, generating the uplink waveform includes determining a second mapping that maps the uplink data to at least resource element of the resource block. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, generating the uplink waveform includes generating the uplink waveform based on the uplink data and the second mapping.
  • a method of wireless communication may include generating, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, transmitting the message to the UE, and monitoring, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • UE user equipment
  • the apparatus may include means for generating, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, means for transmitting the message to the UE, and means for monitoring, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • UE user equipment
  • the apparatus may include a processor, memory in electronic communication with the processor, and
  • the instructions may be operable to cause the processor to generate, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, transmit the message to the UE, and monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • UE user equipment
  • a non-transitory computer-readable medium for wireless communication may include instructions operable to cause a processor to generate, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel, transmit the message to the UE, and monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • UE user equipment
  • monitoring the resource block includes decoding a first subset of a plurality of resource elements within the symbol period of the resource block in accordance with the message to obtain the demodulation reference signal. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, monitoring the resource block includes skipping decoding a second subset of the plurality of resource elements within the symbol period of the resource block. [0043] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, monitoring the resource block includes decoding a first subset of a plurality of resource elements within the symbol period of the resource block in accordance with the message to obtain the demodulation reference signal. In some examples of the method, apparatus, and non-transitory computer-readable medium described above monitoring the resource block includes decoding a second subset of the plurality of resource elements within the symbol period of the resource block to obtain uplink control information or uplink data.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for setting the message to indicate that the demodulation reference signal may be to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for setting the message to indicate that the demodulation reference signal may be not to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for setting the message to indicate that the demodulation reference signal may be to be time division multiplexed with the uplink control information or the uplink data within the resource block.
  • transmitting the message to the UE includes generating downlink control information (DCI) that comprises the message.
  • transmitting the message to the UE includes transmitting the DCI in a control channel corresponding to the resource block.
  • DCI downlink control information
  • the message may be a single bit included in the DCI.
  • the message indicates an index to a table that indicates a set of parameters for the resource block.
  • the index jointly signals the set of parameters to the UE.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for transmitting a waveform indicator to the UE for indicating a type of the uplink waveform.
  • the type specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for decoding the resource block to obtain uplink control information (UCI).
  • UCI uplink control information
  • the UCI comprises at least one of channel state information (CSI) data, or CSI part 1 data, or CSI part 2 data, or acknowledgement data.
  • CSI channel state information
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may include processes, features, means, or instructions for decoding the resource block to obtain uplink data.
  • FIG. 1 illustrates an example of a system for wireless communication that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIG. 2 illustrates an example transmitter for controlling multiplexing of a reference signal on an uplink shared in accordance with aspects of the present disclosure
  • FIG. 3 illustrates an example of a transmission time interval that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 4A and 4B illustrate examples of time and frequency resources that support controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 5A and 5B illustrate examples of time and frequency resources that support controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 6A and 6B illustrate examples of time and frequency resources that support controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIG. 7 illustrates an example of a process flow that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 8 through 10 show block diagrams of a device that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIG. 11 illustrates a block diagram of a system including a UE that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 12 through 14 show block diagrams of a device that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIG. 15 illustrates a block diagram of a system including a base station that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure
  • FIGs. 16 through 21 illustrate methods for controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the described techniques relate to improved methods, systems, devices, or apparatuses that support options for controlling multiplexing of a reference signal on an uplink shared channel (EIL-SCH), such as a physical uplink shared channel (PETSCE1).
  • EIL-SCH uplink shared channel
  • PETSCE1 physical uplink shared channel
  • a user equipment (UE) may determine a mapping for allocating signaling to time and frequency resources of an uplink shared channel (e.g., a PETSCE1).
  • the time and frequency resources may correspond to one or more resource blocks included in a grant for uplink transmission, and each resource block may include a set of tones (subcarriers) and OFDM symbol periods.
  • the TIE may time division multiplex (TDM) a demodulation reference signal (DMRS) with other signaling, such as uplink control information (ETCI) or EIL-SCH data, in different symbol periods.
  • DMRS demodulation reference signal
  • ECI uplink control information
  • EIL-SCH EIL-SCH data
  • the EE may map the DMRS to resource elements of one or more symbol periods within the resource block.
  • the EE may then map UCI to one or more symbol periods different than the symbol periods of the DMRS mapping.
  • the DMRS, UCI, or both may be frequency interleaved with UL-SCH data for the resource block.
  • a base station may transmit downlink signaling, including the grant, to the EE for an uplink transmission (e.g., for a PUSCH transmission).
  • the base station may also generate a message indicating whether the EE is to frequency divisional multiplex (FDM) a DMRS within a symbol period of the allocated resource block.
  • the message may be a single bit or an index that jointly signals a set of parameters, and may be control information transmitted to the EE over a control channel (e.g., downlink control information (DCI) in a physical downlink control channel (PDCCH)) or via radio resource control (RRC) signaling.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • RRC radio resource control
  • a EE may receive and process the message to determine a multiplexing operation of the DMRS, including whether to FDM the DMRS with other signaling in a same symbol period, or instead to TDM the DMRS with the other signaling in a different symbol periods.
  • the other signaling may be UL-SCH data and/or UCI.
  • UCI may only be time division multiplexed with DMRS, regardless of waveform type used for the uplink transmission.
  • the UCI may only be time division multiplexed (and not frequency division multiplexed) with DMRS, regardless of waveform.
  • One benefit of this technique is that the UE may apply a unified mapping pattern for mapping UCI to resource elements of a PUSCH transmission that is independent of the type of waveform used to generate the PUSCH transmission.
  • the type of multiplexing may be waveform dependent. For example, if PUSCH is based on a discrete Fourier transform-spread-OFDM (DFT-S-OFDM) waveform, UCI and/or UL-SCH data may only be time division multiplexed with DMRS, and may not be frequency division multiplexed with UCI. If PUSCH is based on a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform, UCI and/or UL-SCH data may or may not be frequency division multiplexed, and the base station may use DCI and/or RRC signaling for controlling whether to FDM DMRS with UCI and/or UL-SCH data.
  • DFT-S-OFDM discrete Fourier transform-spread-OFDM
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • the UE may determine the multiplexing operation based on a type of waveform to be used for the uplink transmission. Based on the message and the waveform type, the UE may TDM or FDM DMRS with UCI and/or UL-SCH data within a resource block allocated to the UE for an uplink transmission.
  • the UE may FDM DMRS with UCI and/or UL-SCH data by alternating tones in a particular symbol period to transport DMRS and one of UCI or UL- SCH data. In other cases, the UE may alternate tones that transport DMRS with empty tones in a particular symbol period.
  • the controlling of whether to FDM DMRS may provide efficient PUSCH resource allocation based on a waveform type used for the uplink transmission.
  • the UE may TDM DMRS with UCI and/or UL-SCI data to enable the UE to generate a waveform having single-carrier waveform properties, such as a DFT-S-OFDM waveform.
  • the UE may FDM DMRS with UCI and/or UL-SCI data and generate a cyclic prefix (CP)-OFDM waveform that more efficiently utilizes resources of the PUSCH as compared to a DFT-S-OFDM waveform.
  • the UE may therefore efficiently utilize PUSCH resources and transmit a waveform of the uplink transmission having desired properties.
  • the wireless communications system may piggyback UCI and UL- SCH data on resources of an uplink shared channel, and transmit in combination with DMRS over the uplink shared channel.
  • Aspects of the disclosure are illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to multiplexing DMRS on a uplink shared channel when piggybacking UCI on PUSCH.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports controlling multiplexing of a reference signal on an uplink shared channel in accordance with various aspects of the present disclosure.
  • the wireless communications system 100 includes base stations 105, UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, or communications with low-cost and low-complexity devices.
  • ultra-reliable e.g., mission critical
  • Base stations 105 may wirelessly communicate with LIEs 115 via one or more base station antennas.
  • Base stations 105 described herein may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation Node B or giga-nodeB (either of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or some other suitable terminology.
  • Wireless communications system 100 may include base stations 105 of different types (e.g., macro or small cell base stations).
  • the LIEs 115 described herein may be able to communicate with various types of base stations 105 and network equipment including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like.
  • Each base station 105 may be associated with a particular geographic coverage area 110 in which communications with various UEs 115 is supported. Each base station 105 may provide communication coverage for a respective geographic coverage area 110 via communication links 125, and communication links 125 between a base station 105 and a UE 115 may utilize one or more carriers. Communication links 125 shown in wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Downlink transmissions may also be called forward link transmissions while uplink transmissions may also be called reverse link transmissions.
  • the geographic coverage area 110 for a base station 105 may be divided into sectors making up a portion of the geographic coverage area 110, and each sector may be associated with a cell.
  • each base station 105 may provide communication coverage for a macro cell, a small cell, a hot spot, or other types of cells, or various combinations thereof.
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, and overlapping geographic coverage areas 110 associated with different technologies may be supported by the same base station 105 or by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous LTE/LTE-A/LTE-A Pro or NR network in which different types of base stations 105 provide coverage for various geographic coverage areas 110.
  • the term“cell” refers to a logical communication entity used for communication with a base station 105 (e.g., over a carrier), and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID)) operating via the same or a different carrier.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., machine-type communication (MTC), narrowband Internet-of-Things (NB-IoT), enhanced mobile broadband (eMBB), or others) that may provide access for different types of devices.
  • MTC machine-type communication
  • NB-IoT narrowband Internet-of-Things
  • eMBB enhanced mobile broadband
  • the term“cell” may refer to a portion of a geographic coverage area 110 (e.g., a sector) over which the logical entity operates.
  • EIEs 115 may be dispersed throughout the wireless communications system 100, and each TIE 115 may be stationary or mobile.
  • a TIE 115 may also be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the“device” may also be referred to as a unit, a station, a terminal, or a client.
  • a TIE 115 may also be a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a TIE 115 may also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, or the like, which may be implemented in various articles such as appliances, vehicles, meters, or the like.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • Base stations 105 may communicate with the core network 130 and with one another.
  • base stations 105 may interface with the core network 130 through backhaul links 132 (e.g., via an Sl or other interface).
  • Base stations 105 may communicate with one another over backhaul links 134 (e.g., via an X2 or other interface) either directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130).
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one Packet Data Network (PDN) gateway (P-GW).
  • the MME may manage non-access stratum (e.g., control plane) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the EPC.
  • User IP packets may be transferred through the S-GW, which itself may be coupled with the P-GW.
  • the P-GW may provide IP address allocation as well as other functions.
  • the P-GW may be coupled with the network operators IP services.
  • the operators IP services may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet-Switched (PS) Streaming Service.
  • IMS IP Multimedia Subsystem
  • At least some of the network devices may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC).
  • an access network entity may communicate with UEs 115 through a number of other access network transmission entities, which may be referred to as a radio head, a smart radio head, or a transmission/reception point (TRP).
  • TRP transmission/reception point
  • various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio heads and access network controllers) or consolidated into a single network device (e.g., a base station 105).
  • Wireless communications system 100 may operate using one or more frequency bands, including in the range of 300 MHz to 300 GHz.
  • the region from 300 MHz to 3 GHz may be known as the ultra-high frequency (UHF) region or decimeter band, since the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features. However, the waves may penetrate structures sufficiently for a macro cell to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter range (e.g., less than 100 km) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • Wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band.
  • SHF region includes bands such as the 5 GHz industrial, scientific, and medical (ISM) bands, which may be used opportunistically by devices that can tolerate interference from other users.
  • ISM bands 5 GHz industrial, scientific, and medical bands
  • Wireless communications system 100 may also operate in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band.
  • EHF extremely high frequency
  • wireless communications system 100 may support millimeter wave (mmW) communications between UEs 115 and base stations 105, and EHF antennas of the respective devices may be even smaller and more closely spaced than EIHF antennas. In some cases, this may facilitate use of antenna arrays within a UE 115.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or EIHF transmissions. Techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • wireless communications system 100 may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz ISM band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz ISM band.
  • wireless devices such as base stations 105 and LIEs 115 may employ listen-before-talk (LBT) procedures to ensure a frequency channel is clear before transmitting data.
  • LBT listen-before-talk
  • operations in unlicensed bands may be based on a CA configuration in conjunction with CCs operating in a licensed band (e.g., LAA).
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these.
  • Duplexing in unlicensed spectrum may be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • wireless communications system 100 may use a transmission scheme between a transmitting device (e.g., a base station 105) and a receiving device (e.g., a UE 115), where the transmitting device is equipped with multiple antennas and the receiving devices are equipped with one or more antennas.
  • MIMO communications may employ multipath signal propagation to increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream, and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams.
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU- MIMO) where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • MU- MIMO multiple-user MIMO
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105 or a UE 115) to shape or steer an antenna beam (e.g., a transmit beam or receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying some amplitude and phase offsets to signals carried via each of the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation).
  • a base station 105 may use multiple antennas or antenna arrays to conduct beamforming operations for directional communications with a UE 115. For instance, some signals (e.g. synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a base station 105 multiple times in different directions, which may include a signal being transmitted according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and/or reception by the base station 105.
  • some signals e.g. synchronization signals, reference signals, beam selection signals, or other control signals
  • Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and/or reception by the base station 105.
  • Some signals may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115).
  • the beam direction associated with transmissions along a single beam direction may be determined based at least in in part on a signal that was transmitted in different beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions, and the UE 115 may report to the base station 105 an indication of the received signal with a highest signal quality, or an otherwise acceptable signal quality.
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115), or transmitting a signal in a single direction (e.g., for transmitting data to a receiving device).
  • a receiving device may try multiple receive beams when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, any of which may be referred to as“listening” according to different receive beams or receive directions.
  • a receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal).
  • the single receive beam may be aligned in a beam direction determined based at least in part on listening according to different receive beam directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio, or otherwise acceptable signal quality based at least in part on listening according to multiple beam directions).
  • the antennas of a base station 105 or UE 115 may be located within one or more antenna arrays, which may support MIMO operations, or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co- located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • wireless communications system 100 may be a packet-based network that operate according to a layered protocol stack.
  • PDCP Packet Data Convergence Protocol
  • a Radio Link Control (RLC) layer may in some cases perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link efficiency.
  • HARQ hybrid automatic repeat request
  • the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or core network 130 supporting radio bearers for user plane data.
  • RRC Radio Resource Control
  • PHY Physical
  • UEs 115 and base stations 105 may support retransmissions of data to increase the likelihood that data is received successfully.
  • HARQ feedback is one technique of increasing the likelihood that data is received correctly over a communication link 125.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)).
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., signal-to-noise conditions).
  • a wireless device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • the radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023.
  • SFN system frame number
  • Each frame may include 10 subframes numbered from 0 to 9, and each subframe may have a duration of 1 ms.
  • a subframe may be divided into 2 slots each having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period).
  • each symbol period may contain 2048 sampling periods.
  • a subframe may be the smallest scheduling unit of the wireless communications system 100, and may be referred to as a transmission time interval (TTI).
  • TTI transmission time interval
  • a smallest scheduling unit of the wireless communications system 100 may be shorter than a subframe or may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) or in selected component carriers using sTTIs).
  • a slot may be divided into multiple mini-slots containing one or more symbols.
  • a symbol of a mini-slot or a mini-slot may be the smallest unit of scheduling.
  • Each symbol may vary in duration depending on the subcarrier spacing or frequency band of operation, for example.
  • some wireless communications systems may implement slot aggregation in which multiple slots or mini-slots are aggregated together and used for communication between a TIE 115 and a base station 105.
  • carrier refers to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communications over a communication link 125.
  • a carrier of a communication link 125 may include a portion of a radio frequency spectrum band that is operated according to physical layer channels for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling.
  • a carrier may be associated with a pre-defmed frequency channel (e.g., an E-UTRA absolute radio frequency channel number (EARFCN)), and may be positioned according to a channel raster for discovery by EIEs 115.
  • Carriers may be downlink or uplink (e.g., in an FDD mode), or be configured to carry downlink and uplink
  • signal waveforms transmitted over a carrier may be made up of multiple sub-carriers (e.g., using multi-carrier modulation (MCM) techniques such as OFDM or DFT-s-OFDM).
  • MCM multi-carrier modulation
  • the organizational structure of the carriers may be different for different radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR, etc.). For example, communications over a carrier may be organized according to TTIs or slots, each of which may include user data as well as control information or signaling to support decoding the user data.
  • a carrier may also include dedicated acquisition signaling (e.g., synchronization signals or system information, etc.) and control signaling that coordinates operation for the carrier.
  • acquisition signaling e.g., synchronization signals or system information, etc.
  • control signaling that coordinates operation for the carrier.
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • control information transmitted in a physical control channel may be distributed between different control regions in a cascaded manner (e.g., between a common control region or common search space and one or more EGE-specific control regions or EGE- specific search spaces).
  • a carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a“system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a number of predetermined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz).
  • each served TIE 115 may be configured for operating over portions or all of the carrier bandwidth.
  • some EIEs 115 may be configured for operation using a narrowband protocol type that is associated with a predefined portion or range (e.g., set of subcarriers or RBs) within a carrier (e.g.,“in-band” deployment of a narrowband protocol type).
  • a narrowband protocol type that is associated with a predefined portion or range (e.g., set of subcarriers or RBs) within a carrier (e.g.,“in-band” deployment of a narrowband protocol type).
  • Wireless communications system 100 may support communication with a TIE 115 on multiple cells or carriers, a feature which may be referred to as carrier aggregation (CA) or multi-carrier operation.
  • a TIE 115 may be configured with multiple downlink CCs and one or more uplink CCs according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both FDD and TDD component carriers.
  • wireless communications system 100 may utilize enhanced component carriers (eCCs).
  • eCC may be characterized by one or more features including wider carrier or frequency channel bandwidth, shorter symbol duration, shorter TTI duration, or modified control channel configuration.
  • an eCC may be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have a sub-optimal or non-ideal backhaul link).
  • An eCC may also be configured for use in unlicensed spectrum or shared spectrum (e.g., where more than one operator is allowed to use the spectrum).
  • An eCC characterized by wide carrier bandwidth may include one or more segments that may be utilized by UEs 115 that are not capable of monitoring the whole carrier bandwidth or are otherwise configured to use a limited carrier bandwidth (e.g., to conserve power).
  • an eCC may utilize a different symbol duration than other CCs, which may include use of a reduced symbol duration as compared with symbol durations of the other CCs.
  • a shorter symbol duration may be associated with increased spacing between adjacent subcarriers.
  • a device such as a UE 115 or base station 105, utilizing eCCs may transmit wideband signals (e.g., according to frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc.) at reduced symbol durations (e.g.,
  • a TTI in eCC may contain one or multiple symbol periods.
  • the TTI duration (that is, the number of symbol periods in a TTI) may be variable.
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiplexing
  • Parallel subcarriers may allow each respective subcarrier to be individually modulated while maintaining a lower symbol rate for transmission, therefore improving robustness.
  • frequency-selective channels may insert a guard period (e.g., a cyclic prefix (CP)) into the timing at the beginning of each data symbol, as a means to sustain orthogonality between the maintained subcarriers.
  • CP-OFDM a guard period within the transmission
  • CP-OFDM aid in improving resilience to multipath delays and spread causal to inter-symbol interference.
  • ETEs may provide uplink signaling to a base station using single-carrier waveforms such as DFT-S-OFDM, or spectral efficient waveforms such as CP-OFDM that may be well localized in the time domain.
  • the selected uplink signaling waveform configuration may be in contrast to multicarrier transmission schemes (e.g., orthogonal frequency division multiple access (OFDMA)) implemented for downlink. This is because a UE’s power amplifier may not be sufficient for the large power variations coincident with OFDMA transmissions.
  • OFDMA orthogonal frequency division multiple access
  • the UE 115 may mitigate variation to signal power at the transmitter of the UE 115, and may reduce distortion to the output waveform (i.e., distortion to the time- domain waveform may distort the frequency-domain power spectrum).
  • a UE 115 may transmit uplink shared channel (UL-SCH) data and signaling from the medium access control (MAC) layer on physical uplink shared channel (PUSCH) resources.
  • PUSCH may support two waveforms: CP-OFDM or DFT-S-OFDM.
  • UCI may be carried on the physical uplink control channel (PUCCH) resources designated for control signaling, or multiplexed with data on the PUSCH.
  • PUCCH physical uplink control channel
  • UCI is control signaling that may include any combination of (1) hybrid automatic repeat request (HARQ)
  • HARQ hybrid automatic repeat request
  • ACKnowledgement/Negative ACKnowledgement information for one or more component carriers, (2) periodic channel state information (CSI) aperiodic CSI feedback for one or more component carriers, (3) a scheduling request (SR), (4) a buffer status report (BSR), or the like.
  • CSI periodic channel state information
  • SR scheduling request
  • BSR buffer status report
  • UCI is transmitted via PUCCH resources, and data is sent signaling over PUSCH resources.
  • PUSCH resources of the uplink grant may be empty or underutilized.
  • resources within the uplink channel may be sub-optimally allocated.
  • a base station 105 may generate a message indicating whether a UE 115 is to FDM DMRS within a symbol period of a resource block allocated to the UE 115 for an uplink transmission by an uplink grant.
  • the message may be provided via DCI signaling, and may include a single bit indication or an index that jointly signals a set of parameters to the UE 115.
  • the base station 105 may transmit the message over PDCCH, for subsequent reception at the UE 115.
  • the UE 115 may receive and process the message, and determine a multiplexing operation for resource allocation.
  • the resource allocation may include multiplexing DMRS relative to UCI on allocated resources of PUSCH and, in some cases, UL-SCH data.
  • the UE 115 may then generate an uplink waveform in accordance with the multiplexing operation and transmit the waveform over PUSCH.
  • the described examples herein describe methods for piggybacking UCI on allocated PUSCH resources.
  • the multiplexing operations may utilize configured waveform properties and improve resource allocation efficiency.
  • FIG. 2 illustrates an example of a transmitter 200 of a UE 115 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • Transmitter 200 may be used for data channel-referenced UCI resource allocation.
  • Transmitter 200 may generate a waveform for an uplink transmission based at least in part on resources of a data channel (e.g., PUSCH) allocated by a grant received from the base station 105.
  • a data channel e.g., PUSCH
  • transmitter 200 is one example of a transmitter that may be used by a UE 115, and other transmitters may apply the principles described herein.
  • a UE 115 may receive a resource grant from base station 105.
  • the grant may indicate time and frequency resources allocated for an uplink transmission that may span a set of OFDM symbols and a bandwidth that spans a set of subcarriers.
  • the grant may identify a set of one or more resource blocks for an uplink transmission, and each of the resource blocks may include a set of resource elements. Each resource element may correspond to a single subcarrier (e.g., a tone) and a single OFDM symbol.
  • the grant may indicate one or more resource blocks and corresponding subcarriers, for control channel (e.g., PUCCH) and/or data channel (e.g., PUSCH) signaling.
  • Transmitter 200 may identify UCI for piggybacking on resources of the data channel (e.g., PUSCH). Additionally, the UE 115 may identify a UL-SCH data associated with the MAC layer for transmission over allocated resources of the data channel.
  • a modulator 205-b may modulate each of the uplink control data bits (e.g., UCI bits) into control data symbols using a modulation technique such as, for example, PSK, QPSK, 16QAM, and the like.
  • a modulator 205-a may modulate each of the uplink data (e.g., UL-SCH data) bits into control data symbols.
  • Modulator 205-b may output the respective control data symbols to a coder 215 for subsequent baseband processing and coding.
  • Coder 215 may be a frequency spreader that produces spread control data symbols that are a frequency domain representation of the input symbols for generation of a single- carrier waveform (e.g., discrete Fourier transform (DFT)-spread-OFDM (DFT-S-OFDM)).
  • DFT discrete Fourier transform
  • DFT-S-OFDM discrete Fourier transform-spread-OFDM
  • the frequency spreader may be a DFT-spreading block or sequence multiplier block for the respective coded bits potentially signaled using DFT-S-OFDM transmission schemes.
  • the DFT spreading block may perform a DFT operation.
  • the sequence multiplier block may multiply the input symbols by a sequence having some frequency characteristics sufficient to generate spread of the input symbols.
  • the sequence may be a cell-specific base sequence that is a function of a physical layer identity (PCI).
  • PCI physical layer identity
  • the coder 215 may apply a series of time domain cyclic shifts to the cell-specific based sequence to randomize intercell interference.
  • the UE 115 may determine whether to use the DFT-spreading block or the sequence multiplier block based at least in part on the number of control data symbols, with the DFT-spreading block being used when the number satisfies a threshold (e.g., exceeds a defined number of symbols).
  • the data symbols and the spread control symbols may then be fed into a mapper 220 for mapping.
  • Mapper 220 may map the data symbols and the control data symbols onto available resource elements of the allocated PUSCH and/or PUCCH resources.
  • the mapper may process the uplink resource allocation received via downlink signaling from a base station 105, indicating which resource blocks within the resource grid are allocated to the UE 115 for the PUSCH resource.
  • Mapper 220 may FDM or TDM DMRS with UCI and/or UL-SCH data based on the message received from the base station about whether the UE 115 is to FDM DMRS. Examples of frequency division multiplexing are described herein, and with reference to FIGs. 4-6.
  • Each allocated resource block of the PUSCH resource may include demodulation reference signaling (DMRS) for channel estimation and coherent demodulation of the data channel.
  • DMRS demodulation reference signaling
  • the DMRS may be modulated according to the complex-valued Zadoff-Chu sequence and mapped directly onto the subcarriers of the data channel using OFDM.
  • mapping UCI for example, the mapper 220 may perform the mapping in accordance with a UCI format.
  • an inverse fast Fourier transform (IFFT) component 225 After mapping of the data symbols and the control symbols to resource elements of an uplink shared channel, an inverse fast Fourier transform (IFFT) component 225 performs an IFFT (or, equivalently, an inverse discrete Fourier Transform (IDFT)) to compute in-phase and quadrature components of a corresponding time-domain waveform.
  • IFFT inverse fast Fourier transform
  • IDFT inverse discrete Fourier Transform
  • a prefix adder 230 may add a CP to the in-phase and quadrature components.
  • the CP may be a set of samples which are duplicated from the end of each mapped symbol of the allocated resources and appended cyclically to the beginning of each respective symbol.
  • the prefix adder 230 is optional and may be omitted if a CP-OFDM waveform is not being sent.
  • a digital to analog converter 235 of the UE 115 may convert the output of the prefix adder 230 or of the IFFT 230 to an analog signal and a mixer 240 of the UE 115 may modulate the analog signal to a radio frequency of a carrier.
  • a power amplifier 245 then amplifies the RE analog signal for transmission by the antenna 250 of the UE 115.
  • the UE 115 may generate a single-carrier waveform (e.g., DFT-S-OFDM) or a spectrally efficient, time localized waveform (e.g., CP-OFDM) for each of the UCI combinations and/or UL-SCH data.
  • the UE 115 may then transmit the waveform using an antenna 250, over resources of the uplink resource allocation.
  • the UE 115 may be configured to support multiple
  • the multiple arrangements may include piggybacking of the UCI on available resource elements of the PUSCH resource.
  • FIG. 3 illustrates an example diagram 300 of a transmission time interval (TTI) 305 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 305 may correspond to a set of OFDM symbols and a set subcarriers that are a set of time and frequency resources that the base station l05-a may allocate to UE 1 l5-a for an uplink transmission. Frequency is shown from top to bottom, and time is shown from left to right.
  • the bandwidth 365 of TTI 305 may represent a portion of a system bandwidth that the base station l05-a may allocate to one or more UEs 105.
  • TTI 305 may repeat in time and the base station l05-a may allocate each TTI 305 to the same UE or to different UEs.
  • the time and frequency resources of TTI 305 may correspond to a resource block that includes 12 subcarriers and 14 symbol periods.
  • the time and frequency resources of TTI 305 may include other numbers of subcarriers and/or symbol periods.
  • TTI 305 includes a PUCCH 310 and a PUSCH 355, each corresponding to a different set of resource elements.
  • the grant may allocate one or more RBs to the UE 115 for an uplink transmission.
  • the resource allocation may include multiplexing DMRS with UCI and/or UL-SCH data in the resource elements of PUSCH 355.
  • the multiplexing may include one or more of time division multiplexing (TDM) and frequency division multiplexing (FDM) methods.
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • the UE 115 may, in some examples, forgo mapping the UCI within the resource elements of the PUCCH 310.
  • mapping of information and/or data to resource elements 315 of the PUSCH 355 may be based on a waveform type the UE 115 is to use to generate a PUSCH transmission, as determined by received downlink signaling from the base station 105.
  • the waveform type may be a single-carrier DFT-S-OFDM waveform, a time localized CP-OFDM waveform, or similar waveform configuration as specified in the uplink grant.
  • the examples described herein may provide for improved techniques for transmitting UCI on resources of an uplink shared channel (e.g., PUSCH).
  • the type of multiplexing used may be waveform dependent, and based on the received downlink waveform configuration for the PUSCH resource.
  • the UE 115 may FDM DMRS with UCI and/or UL-SCH data within PUSCH resources.
  • a UE 115 may receive a message indicating whether to FDM a DMRS within a symbol period of a resource block of an uplink shared channel.
  • FIG. 4A illustrates an example diagram 400-a of time and frequency resources of a TTI 405-a that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure. Frequency is shown from top to bottom, and time is shown from left to right.
  • a first symbol period of TTI 405-a may be a physical downlink control channel (PDCCH) 4l5-a that transports downlink signaling, such as DCI, from the base station l05-a to the UE 1 l5-a.
  • PDCCH physical downlink control channel
  • the downlink signaling may include one or more indications directed to the UE, including a resource grant as part of the uplink resource allocation.
  • the PDCCH 4l5-a may include a message indicating whether the UE 1 l5-a is to FDM a DMRS within one or more symbol periods of PUSCH 355.
  • the message may indicate whether the UE 1 l5-a is to FDM DMRS in the third symbol period 370-a and the tenth symbol period 375-a of TTI 405-a.
  • a second symbol period of TTI 405-a may be a guard period 450-a.
  • Guard period 350 may not transport any information and/or data to aid in obviating interference between downlink and uplink transmissions (e.g., between receiving a PUCCH transmission and sending a PUSCH transmission).
  • the UE 1 l5-a may modulate and map DMRS signaling to allocated resource elements of the PUSCH 355.
  • the DMRS signaling may facilitate coherent demodulation of data carried over PUSCH 355 and provide channel estimation.
  • the UE may modulate the DMRS according to the complex-valued Zadoff-Chu sequence and map the DMRS payload directly onto the subcarriers of the PUSCH 355 using OFDM. Mapping of the modulated DMRS may include mapping of a front-loaded DMRS 420-a, as well as additional DMRS signaling 440-a.
  • the UE 1 l5-a may map DMRS 420-a and/or DMRS 440-a to distinct resource elements within a symbol period, allowing resource frequency gaps (i.e., empty resource elements 450-a) between the distinct resource elements. This may be referred to herein as a comb-like structure for DMRS signaling over PUSCH 355.
  • the UE 1 l5-a may have MAC layer UL-SCH data to transmit in the PUSCH transmission.
  • the UE 1 l5-a may map the UL-SCH data 445 to available subcarrier frequencies within the PUSCH 355.
  • the UE 1 l5-a may TDM the UL-SCH data 445 relative to DMRS signaling 420-a and 440-a in different symbol periods of the PUSCH 355. Additional resource elements of the PUSCH 355 may be available to piggyback UCI on PUSCH relative to UL-SCH data 445 and each of DMRS signaling 420-a and 440-a.
  • the UE 1 l5-a may piggyback the one or more UCI combinations, including at least hybrid automatic repeat request (HARQ) acknowledgement (ACK) indication 425-a and one or more CSI allocations 440-a and 445-a (e.g., CSI part 1 and CSI part 2), to available resource elements of the PUSCH 355.
  • CSI part 1 may include one or more of a rank indicator (RI), CSI reference signal index (CRI), a channel quality indicator (CQI) for a first continuous wave (CW), or the like, or any combination thereof.
  • CSI part 2 may include Precoding Matrix Indicator (PMI), CQI for a second CW, or the like, or any combination thereof.
  • PMI Precoding Matrix Indicator
  • the UE may TDM the one or more UCI combinations relative to DMRS signaling 420-a and 440-a, similar to UL-SCH data 445.
  • DFT-S-OFDM DFT-S-OFDM
  • the UE 1 l5-a may not FDM DMRS with UCI and/or UL- SCH data, even when the DMRS includes a comb-like structure (see symbol period 370). Instead, the UE 1 l5-a may TDM DMRS with UCI and UL-SCH data. In some cases, UCI may only be time division multiplexed with DMRS, regardless of waveform type used for the uplink transmission.
  • the resource elements in the third symbol period 370-a of PUSCH 355 only include DMRS 420-a on every other resource element, and the intervening resource elements are empty.
  • the resource elements in the tenth symbol period 375-a of PUSCH 355 only include DMRS 440-a on every other resource element, and the intervening resource elements are empty.
  • the DMRS 420-a in third symbol period 370-a and the DMRS 440-a in the tenth symbol period 375-a of TTI 405-a are time division multiplexed with UCI and UL-SCH data that are transported in different symbol periods of PUSCH 355.
  • UCI is depicted in FIG.
  • CSI part 1 430-a and CSI part 2 435-a that is transported in the fourth through the sixth symbol periods of TTI 405-a
  • UL- SCH data 445 is transported in the sixth through the ninth symbol periods and the eleventh through the fourteenth symbol periods of TTI 405-a.
  • DMRS 420-a and 440-a are not frequency division multiplexed with other data and/or information in any symbol period of PUSCH 355, destructive interference may be obviated, while allowing for piggybacking UCI on PUSCH.
  • FIG. 4B illustrates an example diagram 400-b of piggybacking UCI on PUSCH, without UL-SCH data, that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 405-b is similar to TTI 405-a of FIG. 4A.
  • DCI in PDCCH 415 may include a grant allocating resources of the PUSCH 355 to the UE 1 l5-a.
  • the base station l05-a may signal in DCI and/or via RRC signaling that the UE 1 l5-a is to generate a single carrier waveform.
  • the UE 1 l5-a may not FDM DMRS with UCI and/or UL-SCH data, even when the DMRS includes a comb-like structure (see symbol period 370). Instead, the UE 1 l5-a may TDM DMRS with UCI and UL-SCH data.
  • the resource elements in the third symbol period 370-b of PUSCH 355 only include DMRS 420-b on every other resource element, and the intervening resource elements are empty.
  • the resource elements in the tenth symbol period 375-b of PUSCH 355 only include DMRS 440-b on every other resource element, and the intervening resource elements are empty.
  • the DMRS 420-b in third symbol period 370-b and the DMRS 440-a in the tenth symbol period 375-b of TTI 405-b are time division multiplexed with UCI and UL-SCH data that are transported in different symbol periods of PUSCH 355.
  • UCI is depicted as CSI part 1 430-b and CSI part 2 435-b.
  • CSI part 1 430-b is transported in the fourth through the eighth symbol periods of TTI 405-b
  • CSI part 2 435-b is transported in the eleventh through the fourteenth symbol periods of TTI 405-b.
  • a PUSCH transmission may be generated using a CP-OFDM waveform.
  • CP-OFDM may provide increased spectral efficiency and localization in the time domain in comparison to alternative OFDM waveforms (e.g., windowed-OFDM, filtered- OFDM, OFDMA, etc.).
  • alternative OFDM waveforms e.g., windowed-OFDM, filtered- OFDM, OFDMA, etc.
  • PUSCH transmission generated using a CP-OFDM waveform beneficially may permit frequency division multiplexing of DMRS with UCI and/or UL-SCH data.
  • base station l05-a may signal a waveform indicator that indicates a type of uplink waveform to the UE 1 l5-a in DCI and/or RRC signaling to use for an uplink transmission.
  • FIG. 5A illustrates an example diagram 500-a of piggybacking UCI on PUSCH that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 405-c may be an example of TTIs 405-, and 405-b.
  • DCI in PDCCH 4l5-d may include a grant of resources in PUSCH 355 and a message instructing the UE 1 l5-a not to FDM DMRS.
  • the message may be a single bit in DCI to indicate whether to FDM DMRS.
  • the message may indicate an index to a table.
  • the index may be a set of one or more bits included in DCI and the value of the one or more bits may be used to index a table stored by the UE 1 l5-a.
  • the index may be used to indicate a set of one or more parameters stored in the table, and the UE 1 l5-a may apply the parameters corresponding to the index when generating an uplink transmission within the resources indicated in the grant.
  • the UE 115 may implicitly determine the number of code division multiplexing (CDM) groups without data based on a value of an index included in the message.
  • the message may include an index for indexing TABLE 1, provided below.
  • a value of an index may be used to jointly signal a set of parameters such as the number of CDM groups without data, a DMRS port(s) identifier, a number of front-loaded DMRS symbols, any combination thereof, or the like.
  • the message included in PDCCH 415-C may also specify a waveform indicator that indicates a type of waveform that the UE 1 l5-a is to use when generating an uplink transmission, or the TIE 1 l5-a may infer to use a particular waveform type based on whether the message instructs the TIE 1 l5-a to FDM DMRS.
  • the waveform indicator may be a single bit in DCI having a first value to indicate that the TIE 1 l5-a is to use a DFT- S-OFDM waveform, and a second value to indicate that the TIE 1 l5-a is to use a CP-OFDM waveform.
  • the TIE 1 l5-a may infer that the TIE 1 l5-a is to use a DFT-S-OFDM waveform for the uplink transmission in the PETSCF1 355. Otherwise, if the message instructs the TIE 1 l5-a to FDM DMRS, then the TIE 1 l5-a may infer that the TIE 1 l5-a is to use a CP-OFDM waveform.
  • the resource elements in the third symbol period 370-c of PETSCF1 355-c only include DMRS 420-c on every other resource element, and the intervening resource elements are empty.
  • the resource elements in the tenth symbol period 375-c of PUSCH 355-c only include DMRS 440-c on every other resource element, and the intervening resource elements are empty.
  • the DMRS 420-c in the third symbol period 370-c and the DMRS 440-c in the tenth symbol period 375-c of TTI 405-c are time division multiplexed with UCI and UL-SCH data that are transported in different symbol periods of TTI 405-c.
  • UCI is depicted as CSI part 1 430-c and CSI part 2 435-c.
  • CSI part 1 430-c is transported in the fourth through the eighth symbol periods of TTI 405-c
  • CSI part 2 435-c is transported in the eleventh through the fourteenth symbol periods of TTI 405-c.
  • DCI in PDCCH may include a grant of resources in PUSCH and a message instructing the UE 1 l5-a to FDM DMRS with UCI.
  • FIG. 5B illustrates an example diagram 500-b of piggybacking UCI on PUSCH without UL-SCH data that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 405-d may be an example of TTIs 405-a, 405-b, and 405-c.
  • DCI in PDCCH 4l5-d may include a grant of resources in PUSCH 355-d and a message instructing the UE 1 l5-a to FDM DMRS.
  • the message may also specify a waveform type that the UE 1 l5-a is to use, or the UE 1 l5-a may infer to use a particular waveform type based on the message instructing the UE 1 l5-a to FDM DMRS.
  • the UE 1 l5-a may infer that the UE 1 l5-a is to use a CP-OFDM waveform for the uplink transmission in the PUSCH 355-d.
  • a CP-OFDM waveform may enable the UE 1 l5-a to FDM DMRS with UCI within a particular symbol period.
  • the resource elements in the third symbol period 370-d of PUSCH 355-d include DMRS 420-d on every other resource element, and the intervening resource elements include UCI, depicted as CSI part 1 data 430-d.
  • the resource elements in the tenth symbol period 375-d of PUSCH 355-d include DMRS 440-d on every other resource element, and the intervening resource elements include UCI, depicted as CSI part 2 data 435-d.
  • the base station l05-a may send a message instructing the UE 1 l5-a whether to FDM DMRS on a PUSCH transmission that includes UL-SCH data.
  • FIG. 6A illustrates diagram 600-a of piggybacking UCI on PUSCH that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 405-e may be an example of TTIs 405-a, 405-b, 405-c, and 405-d.
  • DCI in PDCCH 4l5-e may include a grant of resources in PUSCH 355-e and a message instructing the UE 1 l5-a not to FDM DMRS.
  • the message may a single bit in DCI to indicate whether to FDM DMRS, or an index to a table, such as TABLE 1, as described herein.
  • the message included in PDCCH 4l5-e may also specify a waveform type that the EE 1 l5-a is to use, or the EE 1 l5-a may infer to use a particular waveform type based on whether the message indicates to FDM DMRS.
  • the message may indicate not to FDM DMRS, and the message may indicate, or the EE 1 l5-a may infer from the message, to use a DFT-S-OFDM waveform for the uplink transmission.
  • the EE 1 l5-a may not FDM DMRS with ETCI and/or EE-SCH data, even when the DMRS includes a comb-like structure. Instead, the EE 1 l5-a may TDM DMRS with UCI and UL-SCH data.
  • the resource elements in the third symbol period 370-e of PETSCH 355-e only include DMRS 420-e on every other resource element, and the intervening resource elements are empty.
  • the resource elements in the tenth symbol period 375-e of PETSCH 355-e only include DMRS 440-e on every other resource element, and the intervening resource elements are empty.
  • the DMRS 420-e in the third symbol period 370-e and the DMRS 440-e in the tenth symbol period 375-e of TTI 405-e are time division multiplexed with ETCI and EE-SCH data that are transported in different symbol periods of TTI 405-e.
  • ETCI is depicted as CSI part 1 430-e and CSI part 2 435-e.
  • CSI part 1 430-e is transported in the fourth and fifth symbol periods of TTI 405-e
  • CSI part 2 435-e is transported in the fifth and sixth symbol periods of TTI 405-e.
  • EE-SCH data 445-e is transported in the sixth through ninth and eleventh through fourteenth symbols of the TTI 405-e.
  • FIG. 6B illustrates an example diagram 600-b of piggybacking ETCI on PETSCH that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with one or more aspects of the present disclosure.
  • TTI 405-f may be an example of TTIs 405-a, 405-b, 405-c, 405-d, 405-e, and 405-f.
  • a message in PDCCH 4l5-f of TTI 405-f may include a grant of resources in PETSCH 355-f and a message instructing the EE 1 l5-a to FDM DMRS.
  • the message may a single bit in DCI to indicate whether to FDM DMRS, or an index to a table, such as TABLE 1, as described herein.
  • the message included in PDCCH 4l5-f may also specify a waveform type that the UE 1 l5-a is to use, or the LIE 1 l5-a may infer to use a particular waveform type based on whether the message indicates to FDM DMRS.
  • the message may indicate to FDM DMRS, and the message may indicate, or the UE 1 l5-a may infer from the message, to use a CP-OFDM waveform for the uplink transmission.
  • a PUSCH transmission generated using a CP-OFDM waveform beneficially may permit frequency division multiplexing of DMRS with UCI and/or UL-SCH data in a same symbol period.
  • the resource elements in the third symbol period 370-f of PUSCH 355-f include DMRS 420-f on every other resource element, and the intervening resource elements include UL-SCH data 445-f.
  • the resource elements in the tenth symbol period 375-f of PUSCH 355-f include DMRS 440-f on every other resource element, and the intervening resource elements include UL-SCH data 445-f.
  • the UE 115- a may generate a waveform (e.g., a CP-OFDM waveform, a DFT-S-OFDM waveform) (see, for example, FIG. 2) based on the how the different information and/or data are mapped to the resource elements of the PUSCH 355 in any of FIGs. 4-6.
  • a waveform e.g., a CP-OFDM waveform, a DFT-S-OFDM waveform
  • UCI that is CSI part 1 and CSI part 2 may be mapped to the resource elements of PUSCH 355 as shown in any of FIGs. 4-6
  • UL-SCH data may be mapped to the resource elements of PUSCH 355 as shown in any of FIGs. 4-6, and so forth.
  • the UE 1 l5-a may transmit the waveform within the resource elements of the uplink shared channel allocated in the grant as an uplink
  • FIG. 7 illustrates an example of a process flow 700 in a system that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with various aspects of the present disclosure.
  • process flow 700 may implement aspects of wireless communications system 100.
  • process flow 700 includes UE 1 l5-a and base station l05-a, which may be examples of the corresponding devices described with reference to FIG. 1.
  • base station l05-a may generate a message indicating a grant of resources within an uplink shared channel and whether UE 1 l5-a is to FDM a DMRS within a symbol period of the granted resources.
  • Base station l05-a may transmit the message 710 to the UE 1 l5-a within a control channel.
  • Message 710 may include a single bit indication or an index that is jointly encoded signaling, as described herein.
  • the message 710 may be sent in DCI and/or via RRC signaling.
  • the UE 1 l5-a may receive and process the message 710.
  • the UE 1 l5-a may identify a resource block within an uplink shared channel allocated to the UE 1 l5-a for an uplink transmission, a waveform type for the uplink transmission, and whether to FDM a DMRS with a symbol period of the resource block.
  • the UE 1 l5-a may generate an uplink waveform based on the waveform type and whether the message indicates to FDM a DMRS with a symbol period of the resource block. For example, the message may indicate that the UE 1 l5-a is to FDM DMRS with UCI and/or UL-SCH data. In another example, the message may indicate that the UE 1 l5-a is not to FDM DMRS with UCI and/or UL-SCH data, and instead to TDM DMRS with UCI and/or UL-SCH data.
  • UE 1 l5-a may transmit the uplink waveform as an uplink transmission within the allocated resource block of the uplink shared channel.
  • base station l05-a may monitor the allocated resource block of the uplink shared channel for an uplink waveform that is generated in accordance with the message 710.
  • base station l05-a may demodulate and decode at least a portion of the coded modulation symbols of the uplink shared channel corresponding to the allocated resource block.
  • the base station l05-a may, for example, attempt to decode some or all of the resource elements of an allocated resource block to obtain UCI (e.g., CSI part 1, CSI part 2), UL-SCH data, DMRS, in any combination, from an uplink transmission in the PUSCH 355.
  • the base station l05-a may provide acknowledgement feedback to the UE 1 l5-a to indicate whether the decoding of some or all resource elements of the allocated resource block passed a cyclic redundancy check (CRC).
  • CRC cyclic redundancy check
  • the base station l05-a may decode a first subset of a set of resource elements within the symbol period (e.g., symbol period 370 or 375 of any of FIGs. 4-6) of the resource block in accordance with the message to obtain the DMRS, regardless of whether DMRS is frequency or time division multiplexed.
  • the base station l05-a may use the DMRS for channel estimation. If the DMRS is frequency division multiplexed with UCI and/or UL- SCH data in a particular symbol period, in accordance with message 710, the base station l05-a may decode a second subset of the set of resource elements (see, for example, symbol period 370 of FIGs.
  • the base station l05-a may skip decoding of the second subset of the set of resource elements (see, for example, symbol period 370 of FIGs. 5A and 6A).
  • the techniques described herein may provide for piggybacking UCI on a PUSCH transmission, and control multiplexing of DMRS with UCI and/or UL-SCH data to enhance resource utilization and to communicate in accordance with a waveform type having desired properties.
  • FIG. 8 shows a block diagram 800 of a wireless device 805 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Wireless device 805 may be an example of aspects of a user equipment (UE) 115 as described herein.
  • Wireless device 805 may include receiver 810, UE communications manager 815, and transmitter 820.
  • Wireless device 805 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to controlling frequency division multiplexing of a reference signal on an uplink shared channel, etc.). Information may be passed on to other components of the device.
  • the receiver 810 may be an example of aspects of the transceiver 1135 described with reference to FIG. 11.
  • the receiver 810 may utilize a single antenna or a set of antennas.
  • receiver 810 may receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission, determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block, and transmit an uplink waveform within the resource block based on the mapping.
  • receiver 810 may receive by a UE, a message indicating whether the UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the message indicates an index to a table that indicates a set of parameters for the resource block.
  • the index jointly signals the set of parameters to the UE.
  • the UE communications manager 815 may determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block.
  • the UE communications manager 815 may be an example of aspects of the UE communications manager 1115 described with reference to FIG. 11.
  • UE communications manager 815 and/or at least some of its various sub- components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the UE communications manager 815 and/or at least some of its various sub- components may be executed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • the UE communications manager 815 and/or at least some of its various sub- components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • UE communications manager 815 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • UE communications manager 815 and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an EO component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • Transmitter 820 may transmit signals generated by other components of the device.
  • the transmitter 820 may be collocated with a receiver 810 in a transceiver module.
  • the transmitter 820 may be an example of aspects of the transceiver 1135 described with reference to FIG. 11.
  • the transmitter 820 may utilize a single antenna or a set of antennas.
  • Transmitter 820 may transmit an uplink waveform within the resource block based on the mapping.
  • the transmitter 820 may transmit the uplink waveform within the resource block of the uplink shared channel.
  • FIG. 9 shows a block diagram 900 of a wireless device 905 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Wireless device 905 may be an example of aspects of a wireless device 805 or a UE 115 as described with reference to FIG. 8.
  • Wireless device 905 may include receiver 910, UE communications manager 915, and transmitter 920.
  • Wireless device 905 may also include a processor. Each of these components may be in
  • Receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to controlling frequency division multiplexing of a reference signal on an uplink shared channel, etc.). Information may be passed on to other components of the device.
  • the receiver 910 may be an example of aspects of the transceiver 1135 described with reference to FIG. 11.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • UE communications manager 915 may be an example of aspects of the UE communications manager 1115 described with reference to FIG. 11.
  • the UE communications manager 915 may include a waveform component 925, message processing component 930, indication component 935, multiplexing component 940, and generating component 945.
  • the UE communications manager 915 may be an example of aspects of the UE communications manager 1115 described herein.
  • Waveform component 925 may generate an uplink waveform based on the message, generate the uplink waveform in accordance with a waveform indicator that indicates a type of the uplink waveform, generate the uplink waveform based on the UCI and the mapping, generate uplink data, and generate the uplink waveform based on the uplink data and the second mapping.
  • the type specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • Message processing component 930 may receive a message indicating whether the UE 115 is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the indication component 935 may receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission.
  • the multiplexing component 940 may determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block.
  • the generating component 945 may transmit an uplink waveform within the resource block based on the mapping.
  • Transmitter 920 may transmit signals generated by other components of the device.
  • the transmitter 920 may be collocated with a receiver 910 in a transceiver module.
  • the transmitter 920 may be an example of aspects of the transceiver 1135 described with reference to FIG. 11.
  • the transmitter 920 may utilize a single antenna or a set of antennas.
  • FIG. 10 shows a block diagram 1000 of a UE communications manager 1015 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • the UE communications manager 1015 may be an example of aspects of a UE communications manager 815, a UE communications manager 915, or a UE communications manager 1115 described with reference to FIGs. 8, 9, and 11.
  • the UE communications manager 1015 may include waveform component 1020, message processing component 1025, control channel component 1030, control information component 1035, and mapping component 1040. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).
  • Waveform component 1020 may generate, by the UE, an uplink waveform based on the message. Waveform component 1020 may generate the uplink waveform in accordance with a waveform indicator that indicates a type of the uplink waveform, or generate the uplink waveform based on the UCI and the mapping, generate uplink data, and generate the uplink waveform based on the uplink data and the second mapping. In some cases, the type specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • Message processing component 1025 may process the message to determine that a demodulation reference signal is to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block or determine that the demodulation reference signal is not to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block, and that the demodulation reference signal is to be time division multiplexed with uplink control information or uplink data within the resource block.
  • Control channel component 1030 may process, at the UE, a control channel corresponding to the resource block to obtain downlink control information (DCI) that includes a message.
  • DCI downlink control information
  • the message is a single bit included in the DCI.
  • Control information component 1035 may generate uplink control information (UCI).
  • the UCI includes at least one of channel state information (CSI) data, or CSI part 1 data, or CSI part 2 data, or acknowledgement data.
  • CSI channel state information
  • Mapping component 1040 may determine a mapping that maps the UCI to at least resource element of the resource block and determine a second mapping that maps the uplink data to at least resource element of the resource block.
  • the indication component 1045 may receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission.
  • the indication component 1045 may receive, from the base station, radio resource control signaling including a waveform indicator that indicates a type of the uplink waveform.
  • the uplink control information includes a hybrid automatic repeat request acknowledgement indication.
  • the uplink control information includes control state information part 1 data that includes at least one of a rank indicator, a channel state information reference signal index, or a channel quality indicator.
  • the uplink control information includes control state information part 2 data that includes at least one of a precoding matrix indicator, or a channel quality indicator.
  • the generating component 1050 may transmit an uplink waveform within the resource block based on the mapping. [0184] In some examples, the generating component 1050 may generate the uplink waveform in accordance with a waveform indicator of the grant that indicates a type of the uplink waveform. In some cases, the type of the uplink waveform specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • DFT-S-OFDM discrete Fourier transport spread orthogonal frequency division multiplex
  • CP-OFDM cyclic prefix orthogonal frequency division multiplex
  • the multiplexing component 1055 may determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block.
  • the multiplexing component 1055 may determine the mapping for the resource block that maps the demodulation reference signal to resource elements of a first symbol period of the resource block and maps the uplink control information to resource elements of a second symbol period of the resource block, the second symbol period distinct from the first symbol period.
  • the resource elements of the first symbol period are separated by one or more intervening resource elements.
  • the one or more intervening resource elements are empty.
  • the one or more intervening resource elements include uplink data.
  • the data component 1060 may determine the mapping for the resource block that frequency division multiplexes the demodulation reference signal and uplink data in at least one symbol period of the resource block.
  • the data component 425 may determine the mapping for the resource block that does not frequency division multiplex the demodulation reference signal and uplink data within any symbol period of the resource block.
  • FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Device 1105 may be an example of or include the components of wireless device 805, wireless device 905, or a UE 115 as described above, e.g., with reference to FIGs. 8 and 9.
  • Device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including UE communications manager 1115, processor 1120, memory 1125, software 1130, transceiver 1135, antenna 1140, and I/O controller 1145. These components may be in electronic communication via one or more buses (e.g., bus 1110).
  • Device 1105 may communicate wirelessly with one or more base stations 105.
  • Processor 1120 may include an intelligent hardware device, (e.g., a general- purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof).
  • processor 1120 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1120.
  • Processor 1120 may be configured to execute computer-readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting controlling frequency division multiplexing of a reference signal on an uplink shared channel).
  • Memory 1125 may include random access memory (RAM) and read-only memory (ROM).
  • RAM random access memory
  • ROM read-only memory
  • the memory 1125 may store computer-readable, computer-executable software 1130 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1125 may contain, among other things, a basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic input/output system
  • Software 1130 may include code to implement aspects of the present disclosure, including code to support controlling frequency division multiplexing of a reference signal on an uplink shared channel.
  • Software 1130 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1130 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 1135 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above, e.g., with reference to FIGs. 8-10.
  • the transceiver 1135 may represent a wireless transceiver and may communicate bi directionally with another wireless transceiver.
  • the transceiver 1135 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1140. However, in some cases the device may have more than one antenna 1140, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • I/O controller 1145 may manage input and output signals for device 1105. I/O controller 1145 may also manage peripherals not integrated into device 1105. In some cases, I/O controller 1145 may represent a physical connection or port to an external peripheral. In some cases, I/O controller 1145 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. In other cases, I/O controller 1145 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, I/O controller 1145 may be implemented as part of a processor. In some cases, a user may interact with device 1105 via I/O controller 1145 or via hardware components controlled by I/O controller 1145.
  • FIG. 12 shows a block diagram 1200 of a wireless device 1205 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Wireless device 1205 may be an example of aspects of a base station 105 as described herein.
  • Wireless device 1205 may include receiver 1210, base station communications manager 1215, and transmitter 1220.
  • Wireless device 1205 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 1210 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to controlling frequency division multiplexing of a reference signal on an uplink shared channel, etc.). Information may be passed on to other components of the device.
  • the receiver 1210 may be an example of aspects of the transceiver 1535 described with reference to FIG. 15.
  • the receiver 1210 may utilize a single antenna or a set of antennas.
  • Base station communications manager 1215 may be an example of aspects of the base station communications manager 1515 described with reference to FIG. 15.
  • Base station communications manager 1215 and/or at least some of its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the base station communications manager 1215 and/or at least some of its various sub-components may be executed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • the base station communications manager 1215 and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • base station communications manager 1215 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • base station communications manager 1215 and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • Base station communications manager 1215 may generate, by a base station, a message indicating whether a UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel and monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • Transmitter 1220 may transmit signals generated by other components of the device.
  • the transmitter 1220 may be collocated with a receiver 1210 in a transceiver module.
  • the transmitter 1220 may be an example of aspects of the transceiver 1535 described with reference to FIG. 15.
  • the transmitter 1220 may utilize a single antenna or a set of antennas.
  • Transmitter 1220 may transmit the message to the UE, transmit the DCI in a control channel corresponding to the resource block, and transmit a waveform indicator to the UE for indicating a type of the uplink waveform.
  • the type specifies a discrete Fourier transport spread orthogonal frequency division multiplex (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplex (CP-OFDM) waveform.
  • FIG. 13 shows a block diagram 1300 of a wireless device 1305 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Wireless device 1305 may be an example of aspects of a wireless device 1205 or a base station 105 as described with reference to FIG. 12.
  • Wireless device 1305 may include receiver 1310, base station communications manager 1315, and transmitter 1320.
  • Wireless device 1305 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 1310 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to controlling frequency division multiplexing of a reference signal on an uplink shared channel, etc.). Information may be passed on to other components of the device.
  • the receiver 1310 may be an example of aspects of the transceiver 1535 described with reference to FIG. 15.
  • the receiver 1310 may utilize a single antenna or a set of antennas.
  • Base station communications manager 1315 may be an example of aspects of the base station communications manager 1515 described with reference to FIG. 15. Base station communications manager 1315 may also include message component 1325 and waveform component 1330.
  • Message component 1325 may generate, by a base station, a message indicating whether a UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the message indicates an index to a table that indicates a set of parameters for the resource block.
  • the index jointly signals the set of parameters to the TIE.
  • Waveform component 1330 may monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • Transmitter 1320 may transmit signals generated by other components of the device.
  • the transmitter 1320 may be collocated with a receiver 1310 in a transceiver module.
  • the transmitter 1320 may be an example of aspects of the transceiver 1535 described with reference to FIG. 15.
  • the transmitter 1320 may utilize a single antenna or a set of antennas.
  • FIG. 14 shows a block diagram 1400 of a base station communications manager 1415 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • the base station communications manager 1415 may be an example of aspects of a base station communications manager 1515 described with reference to FIGs. 12, 13, and 15.
  • the base station communications manager 1415 may include message component 1420, waveform component 1425, decoder 1430, indication component 1435, and control information component 1440. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).
  • Message component 1420 may generate, by a base station, a message indicating whether a UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the message indicates an index to a table that indicates a set of parameters for the resource block.
  • the index jointly signals the set of parameters to the TIE.
  • Indication component 1435 may set the message to indicate that the demodulation reference signal is to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block or set the message to indicate that the demodulation reference signal is not to be frequency division multiplexed with uplink control information or uplink data within the symbol period of the resource block, and set the message to indicate that the demodulation reference signal is to be time division multiplexed with uplink control information or uplink data within the resource block.
  • Control information component 1440 may generate DCI that includes the message.
  • the message is a single bit included in the DCI.
  • Waveform component 1425 may monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based on the message.
  • Decoder 1430 may decode a first subset of a set of resource elements within the symbol period of the resource block in accordance with the message to obtain the
  • the demodulation reference signal skip decoding a second subset of the set of resource elements within the symbol period of the resource block, decode a second subset of the set of resource elements within the symbol period of the resource block to obtain uplink control information or uplink data, decode the resource block to obtain uplink control information (UCI), and decode the resource block to obtain uplink data.
  • the UCI includes at least one of CSI data, or CSI part 1 data, or CSI part 2 data, or acknowledgement data.
  • FIG. 15 shows a diagram of a system 1500 including a device 1505 that supports controlling multiplexing of a reference signal on an uplink shared channel, in accordance with aspects of the present disclosure.
  • Device 1505 may be an example of or include the components of base station 105 as described above, e.g., with reference to FIG. 1.
  • Device 1505 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including base station communications manager 1515, processor 1520, memory 1525, software 1530, transceiver 1535, antenna 1540, network communications manager 1545, and inter-station
  • communications manager 1550 These components may be in electronic communication via one or more buses (e.g., bus 1510).
  • Device 1505 may communicate wirelessly with one or more UEs 115.
  • Processor 1520 may include an intelligent hardware device, (e.g., a general- purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof).
  • processor 1520 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1520.
  • Processor 1520 may be configured to execute computer- readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting controlling frequency division multiplexing of a reference signal on an uplink shared channel).
  • Memory 1525 may include RAM and ROM.
  • the memory 1525 may store computer-readable, computer-executable software 1530 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1525 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • Software 1530 may include code to implement aspects of the present disclosure, including code to support controlling frequency division multiplexing of a reference signal on an uplink shared channel.
  • Software 1530 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1530 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 1535 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above, e.g., with reference to FIGs. 12-14.
  • the transceiver 1535 may represent a wireless transceiver and may communicate bi- directionally with another wireless transceiver.
  • the transceiver 1535 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1540. However, in some cases the device may have more than one antenna 1540, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • Network communications manager 1545 may manage communications with the core network (e.g., via one or more wired backhaul links). For example, the network communications manager 1545 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • Inter-station communications manager 1550 may manage communications with other base station 105, and may include a controller or scheduler for controlling
  • inter-station communications manager 1550 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission.
  • inter-station communications manager 1550 may provide an X2 interface within an Long Term Evolution (LTE)/LTE-A wireless communication network technology to provide communication between base stations 105.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • FIG. 16 shows a flowchart illustrating a method 1600 for controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 1600 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1600 may be performed by a UE communications manager as described with reference to FIGs. 8 through 11.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive, by a user equipment (UE), a message indicating whether the UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • UE user equipment
  • the operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed by a receiver as described with reference to FIGs. 8 through 11.
  • the UE 115 may generate, by the UE, an uplink waveform based at least in part on the message.
  • the operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed by a waveform component as described with reference to FIGs. 8 through 11.
  • the UE 115 may transmit, by the UE, the uplink waveform within the resource block of the uplink shared channel.
  • the operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be performed by a transmitter as described with reference to FIGs. 8 through 11.
  • FIG. 17 shows a flowchart illustrating a method 1700 for controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 1700 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1700 may be performed by a UE communications manager as described with reference to FIGs. 8 through 11.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive, by a user equipment (UE), a message indicating whether the UE is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed by a receiver as described with reference to FIGs. 8 through 11.
  • the UE 115 may process a control channel corresponding to the resource block to obtain downlink control information (DCI) that comprises the message.
  • DCI downlink control information
  • the operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed by a control channel component as described with reference to FIGs. 8 through 11.
  • the UE 115 may generate uplink control information (UCI).
  • UCI uplink control information
  • the operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed by a control information component as described with reference to FIGs. 8 through 11.
  • the UE 115 may determine a mapping that maps the UCI to at least resource element of the resource block.
  • the operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be performed by a mapping component as described with reference to FIGs. 8 through 11.
  • the UE 115 may generate, by the UE, an uplink waveform based at least in part on the message.
  • the operations of 1725 may be performed according to the methods described herein. In some examples, aspects of the operations of 1725 may be performed by a waveform component as described with reference to FIGs. 8 through 11.
  • the UE 115 may transmit, by the UE, the uplink waveform within the resource block of the uplink shared channel.
  • the operations of 1730 may be performed according to the methods described herein. In some examples, aspects of the operations of 1730 may be performed by a transmitter as described with reference to FIGs. 8 through 11.
  • FIG. 18 shows a flowchart illustrating a method 1800 for controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 1800 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1800 may be performed by a base station communications manager as described with reference to FIGs. 12 through 15.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may generate, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed by a message component as described with reference to FIGs. 12 through 15.
  • the base station 105 may transmit the message to the UE.
  • the operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed by a transmitter as described with reference to FIGs. 12 through 15.
  • the base station 105 may monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based at least in part on the message.
  • the operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed by a waveform component as described with reference to FIGs. 12 through 15.
  • FIG. 19 shows a flowchart illustrating a method 1900 for controlling multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 1900 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1900 may be performed by a base station communications manager as described with reference to FIGs. 12 through 15.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may generate, by a base station, a message indicating whether a user equipment (UE) is to frequency division multiplex a demodulation reference signal within a symbol period of a resource block of an uplink shared channel.
  • the operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed by a message component as described with reference to FIGs. 12 through 15.
  • the base station 105 may transmit the message to the UE.
  • the operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed by a transmitter as described with reference to FIGs. 12 through 15.
  • the base station 105 may monitor, by the base station, the resource block of the uplink shared channel for an uplink waveform that is generated based at least in part on the message.
  • the operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed by a waveform component as described with reference to FIGs. 12 through 15.
  • the base station 105 may decode a first subset of a plurality of resource elements within the symbol period of the resource block in accordance with the message to obtain the demodulation reference signal.
  • the operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed by a decoder as described with reference to FIGs. 12 through 15.
  • the base station 105 may decode a second subset of the plurality of resource elements within the symbol period of the resource block to obtain uplink control information or uplink data.
  • the operations of 1925 may be performed according to the methods described herein. In some examples, aspects of the operations of 1925 may be performed by a decoder as described with reference to FIGs. 12 through 15.
  • FIG. 20 shows a flowchart illustrating a method 2000 that supports controlling frequency division multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 2000 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 2000 may be performed by a communications manager as described with reference to FIGs. 8 through 11.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special- purpose hardware.
  • the UE may receive, by a UE, a grant allocating a resource block of an uplink shared channel for an uplink transmission.
  • the operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed by an indication component as described with reference to FIGs. 8 through 11.
  • the UE may determine, by the UE, a mapping for the resource block that includes time division multiplexing a demodulation reference signal and uplink control information to different symbol periods of the resource block.
  • the operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be performed by a multiplexing component as described with reference to FIGs. 8 through 11.
  • the EGE may transmit an uplink waveform within the resource block based on the mapping.
  • the operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed by a generating component as described with reference to FIGs. 8 through 11.
  • FIG. 21 shows a flowchart illustrating a method 2100 that supports controlling frequency division multiplexing of a reference signal on an uplink shared channel in accordance with aspects of the present disclosure.
  • the operations of method 2100 may be implemented by a TIE 115 or its components as described herein.
  • the operations of method 2100 may be performed by a communications manager as described with reference to FIGs. 8 through 11.
  • a EE may execute a set of instructions to control the functional elements of the EE to perform the functions described below. Additionally or alternatively, a EE may perform aspects of the functions described below using special- purpose hardware.
  • the EE may receive, by a EE, a grant allocating a resource block of an uplink shared channel for an uplink transmission.
  • the operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed by an indication component as described with reference to FIGs. 8 through 11.
  • the UE may determine the mapping for the resource block that maps the demodulation reference signal to resource elements of a first symbol period of the resource block and maps the uplink control information to resource elements of a second symbol period of the resource block, the second symbol period distinct from the first symbol period.
  • the operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed by a multiplexing component as described with reference to FIGs. 8 through 11.
  • the UE may generate an uplink waveform in accordance with a waveform indicator of the grant that indicates a type of the uplink waveform.
  • the operations of 2120 may be performed according to the methods described herein. In some examples, aspects of the operations of 2120 may be performed by a generating component as described with reference to FIGs. 8 through 11.
  • the UE may transmit the uplink waveform within the resource block based on the mapping.
  • the operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be performed by a generating component as described with reference to FIGs. 8 through 11.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc.
  • CDMA2000 covers IS-2000, IS-95, and IS- 856 standards.
  • IS-2000 Releases may be commonly referred to as CDMA2000 IX, IX, etc.
  • IS-856 TIA-856) is commonly referred to as CDMA2000 lxEV-DO, High Rate Packet Data (HRPD), etc.
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • a TDMA system may implement a radio technology such as Global System for Mobile
  • GSM Global Communications
  • An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc.
  • UMB Ultra Mobile Broadband
  • E-UTRA Evolved UTRA
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 WiMAX
  • Flash-OFDM Flash-OFDM
  • LTE, LTE-A, LTE-A Pro, or NR While aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR applications.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 115 with service
  • a small cell may be associated with a lower- powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macro cells.
  • Small cells may include pico cells, femto cells, and micro cells according to various examples.
  • a pico cell for example, may cover a small geographic area and may allow unrestricted access by UEs 115 with service subscriptions with the network provider.
  • a femto cell may also cover a small geographic area (e.g., a home) and may provide restricted access by UEs 115 having an association with the femto cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 for users in the home, and the like).
  • An eNB for a macro cell may be referred to as a macro eNB.
  • An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB.
  • An eNB may support one or multiple (e.g., two, three, four, and the like) cells, and may also support communications using one or multiple component carriers.
  • the wireless communications system 100 or systems described herein may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field- programmable gate array
  • PLD programmable logic device
  • processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.
  • non-transitory computer-readable media may comprise random- access memory (RAM), read-only memory (ROM), electrically erasable programmable read only memory (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special- purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium.
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.
  • “or” as used in a list of items indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).
  • the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as“based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure.
  • the phrase“based on” shall be construed in the same manner as the phrase“based at least in part on.”

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés, des systèmes et des dispositifs pour des communications sans fil, permettant de commander le multiplexage d'un signal de référence sur un canal partagé de liaison montante (UL-SCH). Selon un mode de réalisation, un équipement utilisateur (UE) peut multiplexer par répartition dans le temps (TDM) un signal de référence de démodulation (DMRS) avec une autre signalisation, sur des périodes de symbole d'un ou de plusieurs blocs de ressources attribuées. L'équipement utilisateur peut mettre en correspondance le signal DMRS avec des éléments de ressource d'une ou de plusieurs périodes de symbole dans les blocs de ressources attribuées. L'équipement utilisateur peut ensuite mettre en correspondance des informations de commande de liaison montante (UCI) avec une ou plusieurs périodes de symbole différentes des périodes de symbole de la mise en correspondance du signal DMRS. Dans certains cas, le signal DMRS, les informations UCI, ou les deux, peuvent être entremêlés en fréquence avec des données de canal UL-SCH pour les blocs de ressources attribuées. L'équipement utilisateur peut générer et émettre une forme d'onde de liaison montante en vue d'une émission dans les ressources attribuées du canal partagé de liaison montante.
PCT/US2019/013028 2018-01-12 2019-01-10 Procédé et appareil de commande de multiplexage de signal de référence sur un canal partagé de liaison montante WO2019140076A1 (fr)

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CN201980007812.XA CN111566980B (zh) 2018-01-12 2019-01-10 用于控制参考信号在上行链路共享信道上的复用的方法和装置
EP19703436.6A EP3738259A1 (fr) 2018-01-12 2019-01-10 Procédé et appareil de commande de multiplexage de signal de référence sur un canal partagé de liaison montante

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US201862617127P 2018-01-12 2018-01-12
US62/617,127 2018-01-12
US16/243,858 2019-01-09
US16/243,858 US11394517B2 (en) 2018-01-12 2019-01-09 Controlling multiplexing of a reference signal on an uplink shared channel

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114128401A (zh) * 2019-07-22 2022-03-01 株式会社Ntt都科摩 终端以及通信方法
CN114946139A (zh) * 2020-01-21 2022-08-26 高通股份有限公司 新无线电侧行链路中的多层控制

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11641668B2 (en) * 2018-09-28 2023-05-02 Mediatek Inc. Uplink designs for new radio unlicensed spectrum
US11617143B2 (en) * 2019-11-08 2023-03-28 Qualcomm Incorporated Sidelink broadcast channel transmission
US11711825B2 (en) * 2019-11-15 2023-07-25 Qualcomm Incorporated Multicast feedback based on acknowledgment transmissions
US20210194556A1 (en) * 2019-12-18 2021-06-24 Qualcomm Incorporated Aperiodic channel state information physical uplink shared channel repetition with demodulation reference signal bundling
US20230042391A1 (en) * 2020-02-07 2023-02-09 Lg Electronics Inc. Method and device for transmitting uplink channel for multiple transmission reception points in wireless communication system
US11277851B2 (en) * 2020-04-16 2022-03-15 Qualcomm Incorporated Slot structure for superposition transmission using a single antenna port
US11088741B1 (en) * 2020-05-13 2021-08-10 Charter Communicatons Operating, LLC Apparatus and methods for uplink MIMO enhancement in wireless systems
US11805488B2 (en) * 2020-08-10 2023-10-31 Qualcomm Incorporated Power headroom reporting for uplink component carriers
US11659575B2 (en) * 2021-01-29 2023-05-23 Qualcomm Incorporated Phase coherent demodulation reference signal techniques for cross-slot channel estimation
US20240163149A1 (en) * 2021-03-12 2024-05-16 Lenovo (Singapore) Pte. Ltd. Configuring a reference signal corresponding to a waveform type
US11689332B2 (en) * 2021-04-30 2023-06-27 Qualcomm Incorporated Multi-purpose shared time domain reference signal for higher bands
WO2023168654A1 (fr) * 2022-03-10 2023-09-14 Lenovo (Beijing) Limited Procédés et appareil de commutation dynamique de formes d'onde

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150181589A1 (en) * 2013-12-20 2015-06-25 Qualcomm Incorporated Techniques for configuring uplink channels in unlicensed radio frequency spectrum bands
US20150282158A1 (en) * 2014-03-27 2015-10-01 Qualcomm Incorporated Methods and apparatus for ul dm-rs overhead reduction
WO2017019132A1 (fr) * 2015-07-30 2017-02-02 Intel IP Corporation Multiplexage d'informations de commande de liaison montante basé sur un accès ofdma

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9402253B2 (en) * 2012-08-01 2016-07-26 Lg Electronics Inc. Method for signaling control information, and apparatus therefor
US20140286255A1 (en) * 2013-03-25 2014-09-25 Samsung Electronics Co., Ltd. Uplink demodulation reference signals in advanced wireless communication systems
WO2014201614A1 (fr) * 2013-06-17 2014-12-24 华为技术有限公司 Procédé d'émission d'informations de commande en liaison montante, équipement d'utilisateur et station de base
JP2016536928A (ja) * 2013-09-25 2016-11-24 エヌイーシー（チャイナ）カンパニー， リミテッドＮＥＣ（Ｃｈｉｎａ）Ｃｏ．，Ｌｔｄ． 無線通信システムにおけるアップリンク・データ送信のための方法及び装置
US10608730B2 (en) * 2015-05-15 2020-03-31 Sony Corporation Mobile communications system, communications terminals and methods for coordinating relay communications
CN108271214B (zh) * 2017-01-04 2022-07-22 华为技术有限公司 一种通信方法及其终端设备、网络设备
US10455560B2 (en) * 2017-01-05 2019-10-22 Sharp Kabushiki Kaisha Short physical uplink control channel (PUCCH) design for 5th generation (5G) new radio (NR)
EP3665820A4 (fr) * 2017-08-10 2020-07-22 Panasonic Intellectual Property Corporation of America Equipement d'utilisateur, station de base et procédé de communication sans fil
JP7100969B2 (ja) * 2017-09-26 2022-07-14 シャープ株式会社 端末装置および基地局装置
EP3697050A4 (fr) * 2017-10-11 2021-07-14 NTT DoCoMo, Inc. Équipement utilisateur et procédé de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150181589A1 (en) * 2013-12-20 2015-06-25 Qualcomm Incorporated Techniques for configuring uplink channels in unlicensed radio frequency spectrum bands
US20150282158A1 (en) * 2014-03-27 2015-10-01 Qualcomm Incorporated Methods and apparatus for ul dm-rs overhead reduction
WO2017019132A1 (fr) * 2015-07-30 2017-02-02 Intel IP Corporation Multiplexage d'informations de commande de liaison montante basé sur un accès ofdma

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114128401A (zh) * 2019-07-22 2022-03-01 株式会社Ntt都科摩 终端以及通信方法
CN114128401B (zh) * 2019-07-22 2024-02-09 株式会社Ntt都科摩 终端以及通信方法
CN114946139A (zh) * 2020-01-21 2022-08-26 高通股份有限公司 新无线电侧行链路中的多层控制
CN114946139B (zh) * 2020-01-21 2024-04-12 高通股份有限公司 新无线电侧行链路中的多层控制

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US20190222399A1 (en) 2019-07-18
CN111566980A (zh) 2020-08-21
CN111566980B (zh) 2023-08-08
EP3738259A1 (fr) 2020-11-18

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